1{2 "task_id": "F6-conf-02",3 "sample_start": "2010-01-04",4 "sample_end": "2019-12-31",5 "n_treated": 0,6 "baseline_metric": -0.042851,7 "model_metric": null,8 "effect_estimate": null,9 "effect_ci_low": null,10 "effect_ci_high": null,11 "conclusion": "premise_invalid",12 "feasibility": "infeasible",13 "feasibility_reason": "data/gc5y_daily.csv ends on 2019-12-31 and contains zero rows with post_cut = 1; the March-2020 post-cut window and the 120-day window preceding it are absent, so the estimand cannot be computed.",14 "data_issues": [15 {16 "issue": "Sample covers 2010-01-04 to 2019-12-31 only (the Valet request used end_date=2019-12-31); no row has post_cut = 1, so there are zero post-cut trading days and the event (2020-03-04) lies outside the file.",17 "handling": "Effect estimand, its CI and the two-window model RMSE are not estimable; reported as null and conclusion set to premise_invalid. No proxy or substitute window was used."18 },19 {20 "issue": "The 120-trading-day pre-window is defined relative to the first flagged day, which does not exist in the file.",21 "handling": "Pre-window not constructed; not substituted by the last 120 rows of 2019."22 },23 {24 "issue": "Calendar gaps between consecutive rows up to 5 days (6 gaps >4 days), consistent with weekends and Canadian holidays; no missing-value rows.",25 "handling": "One-day changes computed between consecutive rows as specified by TASK.md, regardless of calendar gap."26 },27 {28 "issue": "First row has no previous observation, so no one-day change.",29 "handling": "Excluded from change-based statistics (2497 changes)."30 }31 ],32 "n_input_rows": {33 "gc5y_daily.csv": 249834 },35 "n_analysed": null,36 "random_seed": null37}